This
sound was repeatedly recorded during summer, 1997 on the Equatorial Pacific
Ocean autonomous hydrophone array. The
sound rises rapidly in frequency over about one minute and was of sufficient
amplitude to be heard on multiple sensors, at a range of over 5,000 km.
It yields a general location near 50oS; 100oW. The
origin of the sound is unknown.
Click
on spectrogram for full-sized
image.
162K
wav file(The
recorded signal has been sped up 16 times)
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